Tbh I agree with you. I rate McGrath as the slightly better bowler overall, But Pollock's batting makes it ultra close.
I am perfectly fine with anyone picking McGrath here as well. I don't think Pollock is that much ahead even for average team. Also, trying to compare batting+bowling to bowling is very subjective.
I often see fans not rating low ER much, but I think it's very important in limited overs, that's why I was trying to highlight that in this thread. In test, it won't play that much a part because you got to pick 20 wickets to win. Imagine Garner, ambrose, Pollock and Bumrah bowling for the same team in limited overs. It will be nightmare for opposition. Despite not getting bowled out, opposition will simply lose games after games due to not able to put a decent total or chase a decent total. Fans may say that some other bowlers can win it upfront by picking lots of wickets, but in reality that happens rarely. On average bowlers don't pick even 2 wickets per game in limited overs. Even the better ones.
Think of it this way, Opposition will have easier time to outscore( that's how you win limited overs) other teams versus,
McGrath/Starc/Garner/Wasim
or
Garner/Ambrose/Pollock/Bumrah
I do rate first set higher myself, but I am not sure that first set will win you more games on average in limited overs. I feel ER gets under rated in limited overs. Both will give equally stiff competition in my opinion and second set it relying more on very hard to hit balls on average.