Win or lose, he still fought the tougher competition, we're talking about the level he fought. Now you mention he only beat 6 guys, make it 7 with Nakamura cause if you're you gonna use Fujita you gotta use Nak. He had wins over Igor, Randleman, Bustamante Cyborg and Kondo and was a top 10 LHW. Furthermore, he beat Sak 3x and Rampage 2x, so overall he had 10 of those top level fighter wins. Also consider he fought Cro Cop in his prime during K1 which was a draw under the special rules. He also lost to Arona, Hunt, Cro Cop and Henderson, that 15 fights vs top competition and a pretty solid 10-4-1 record. Sure he fought some cans, the 4 I mentioned.... but the remainder was Kondo, Yoshida 2x, Tamura and Minowa. Not top level fighters, but not cans either. Out of 24 fights, 15 were vs top comp and another 5 vs good fighers . Overall that is a pretty high level of competition he's facing.
If were just talking wins, 16/20 were vs top/good competition while 4 were gimmie fights.