For reference: Carew, age 27-39: 7,566 PA's, 61.0 bWAR, 5.7 bWAR/600 PA's, .336/.407/.440/.847 (OPS+ 137) Gwynn, age 27-39: 7,390 PA's, 46.8 bWAR, 4.6 bWAR/600 PA's, .343/.393/.470/.863 (OPS+ 135) Ichiro: age 27-39: 9,279 PA's, 58.6 bWAR, 4.6 bWAR/600 PA's, .319/.361/.414/.775 (OPS+ 111) I'm quite rusty on any changes to these metrics (if there are any) over the past five or so years. But, this would seem to illustrate that (i) on a per-plate appearance basis, Gwynn and Carew were far more valuable at the plate than Ichiro and (ii) Ichiro provided a huge amount of value to his team by staying healthy and getting an absurd amount of PA's. He appeared in an average of 159 games in this time span, much of which we remember as the leadoff man in Seattle. Ichiro also gains somewhere around 10-15 bWAR on Gwynn due to defense; but given that Gwynn was before my time and I don't put too much confidence in the defensive metrics from back then, perhaps you can argue that's an overstatement. Hypothetically speaking, given that Ichiro was a mid .900's OPS'er in Japan since he turned 20, it's probably not unreasonable to estimate that had he been in the US, he could have tacked on another 30 career WAR if he made the majors at say, 21 years old. That would put him solidly in the top 20 outfielders and well within the top 50 batters of all time, if that's your measuring stick.