Based on what I think may be the mean or most probable scenario:
Pakistan with Afridi gets a usual small cameo to blast off but Kapil/Bumrah are patient enough to get him out scooping it up cheaply. Anwar and Zaheer look fine but too flashy and by the 10th over it's 50/60 for 2.
Shami comes in with some steady, tight bowling while Kumble is reliably ok as the runrate drops. Zaheer is looser but the odd wicket means Pakistan can't take advantage. They straggle along but by the 30th over at 130/3 or 4 are able to give a bit more stick to Kumble and Zaheer once settled.
40th over it's 180/5 with one set middle order bat of Zaheer/Babar/Miandad and the lower order hitters of Imran/Razzaq/Moin/Wasim. Last 10 overs are a mad rush but Dhoni's captaincy and Bumrahs accuracy stopping each Pakistan hitter from getting away with it, Pakistan end bowled out 260ish.
Pakistan open their bowling with Imran and Wasim and Tendulkar and partner are typically circumspect given their accuracy and would rather seem them off but one too many shot attempts across the line or wafts outside off at Wasim and India are 35/40 odd for 2 after ten overs.
Waqar comes in and either Kohli/Sharma take a liking to his incoming line and he starts leaking runs. Saqlain is accurate but is still milked comfortably. One of Razzaq/Afridi will be dispatched as the match changes momentum.
Saqlain gets a wicket of stumping or near the boundary due to over eagerness but by the 30th over India are sitting easier at 140/50 odd for 3 with either Tendulkar/Kohli/Yuvraj comfortably set. Around the mid 35th over Waqar comes in with a reverse swing wicket totally against the run of play as he often does. By the 40th over Dhoni is at the crease as India near 7 a over with 5/6 wickets in hand.
Dhoni is able to land some lusty blows but loses wickets at the other end while Imran as captain gets his pacers and Saqlain to attack as Wasim and Imran give little away.
Last three/four overs and 30-40 needed and it depends on either Dhoni or Kapil to see them through. He scores the odd needed boundary but two overs remaining and Wasim and Waqar do the coup de grace skittling through the tail as Pakistan win with 10 odd in change.
Crucial difference being tail strength (India have four pure tailenders) and the ability of all three Pakistan pacers to take quick wickets in clumps to change the game quickly to offset their weaker bowlers.
It's interesting how different people can imagine these sort of hypothetical ATG matches going down very differently. Here's how I envision it'd play out:
Pakistan win the toss and choose to bowl, to negate India's strength in chasing.
Sachin does well in the opening powerplay, but doesn't get much strike as Rohit struggles against Imran and Wasim. Eventually he is out for a disappointing 12 (26) and Kohli and Sachin start to rebuild.
The two are able to see out the rest of the powerplay without loss but the scoring rate is not high, though once Kohli is in he starts to catch up a little.
Saqlain is brought on after the powerplay ends and continues to keep things tight, though the partnership between Sachin and Virat continues to accumulate.
*Glass shatters*
By gawd, it's the Texas Rattlesnake!
Stone Cold is here. Stone Cold is here ...and he's raising hell!
Stunner to Wasim. Stunner to Zaheer. Stone Cold is laying waste to the entire Pakistani ODI ATG XI! But referee Joel Wilson hasn't seen it!
Suddenly Sachin and Virat are scoring boundaries at will, there are gaps in the field everywhere. Saqlain can't contain them.
Stunner to Imran! The Pakistani captain has been hit for six here by the Texas Rattlesnake. Stunner to Saqlain, Stone Cold is at the pitch now. Sachin and Stone Cold are embracing. The crowd are going wild.
By gawd, Virat Kohli with a low blow on Austin from behind. Virat is stomping on him. Sachin, Sachin what are you doing? He's stomping the hell out of Austin too. It's a double cross.
MS Dhoni is on the field now. He's passing a steel chair to Shahid Afridi. By gawd, what are we witnessing? India and Pakistan have united against the Rattlesnake. Tendulkar and Kohli lift up Austin and hold him for Afridi to come and deliver a chair shot to the stricken Texan.
Stone Cold ducks at the last second! Afridi hit Sachin with the chair!
Stunner to Dhoni! Stunner to Virat! Stunner to Afridi! Stunner to Joel Wilson!
Stone Cold Steve Austin has grabbed the ICC World Championship, and he's leaving with it! He catches a beer from the crowd and he's celebrating in style! Nobody expected him to pick up another world title today, but the Rattlesnake has done it! He has overcome both India and Pakistan in a slobberknocker of a contest.
He wasn't supposed to be in the final. He's not even technically an ICC affiliated nation, but he has done it. This will be remembered as the most controversial and dramatic turn of events in an ICC World Final since England lifted the trophy on boundary countback. But by gawd, the history books will show Stone Cold Steve Austin, is the winner today.
**Note, Austin later jobs the belt to Sri Lanka.