s not an excuse its a fact mate, the standard of bowling on each side contributed significantly to Tendulkar having a better 2nd Innnings average than Lara. Even Though Ambrose/Walsh were their WI conceded some big scores from March 95 to August 2000 (which was the latter half of Ambrose & Walshes careers).
I dunno why you use selected arbitary dates such as these to try and shore up Lara but here are some facts.
Between March 1995 and August 2000, India played 39 tests and conceded 20349 runs, or around 520 runs/match. India's overall bowling average was 34.00, meaning that IND picked up around 600 wickets during that span.
In the SAME timeframe, West Indies played 51 matches, conceded 23407 runs, or around 458 runs per match. WI's bowling average was 27.2, which means they took around 870 wickets during that span.
WI conceded 400+ runs 15 times in those 51 matches while IND conceded 400+ runs in 13 outts 39 occasions. ( % per match being 29.41% time while for IND it was 33.33% of the time).
Based on all the abovementioned data, it is INCORRECT to say that Lara fielded more in the field since WI bowlers conceded more runs in that timeframe.
Ofcourse, you could argue that Lara would've played 12 more tests but India has played 67 more ODIs, which equates to more time spent in the middle ( even if WI played all 5 days in those 'extra' 12 tests, it would come to 60 days, not to mention that 1 day of test cricket has less action than 1 day of ODI cricket).