My '00 Warrior was quite capable of beating 400s in the drag to the first corner, but I had lots done to it. Port&polish, WB .390, Wiseco 10.25, no airbox lid AND holes in the box, DG full system. Plus it was geaaring right. I'd leave the line in second. There were many nights when our classes ran together and I was in the middel of the 400s at the first corner. Of course, the ones that had very much work were in front of me, but you get the idea. And it also depends greatly on rider ability.
'98/'04 MX Warrior...racing again! LoneStar, Wicked, Works all around, Web, Arias, Noss, DG, Douglas, etc., etc., etc. Gotta go...sponsors to please and Hondas to beat :)