Well i think that only makes my point stronger. By the time those 2 came out, there were 3 Tekkens, 2 Virtua Fighters and 1 Soul Calibur on PS2 alone. That's 6 fighters, 8 with Tekken5 and SC3!!! Campared to DOA3 which was all alone for more than a year. Unless you count one or two silly fighting games Xbox got that we shouldn't mention here or our IQ would go down of a few points.
I'm not surprised that T5 and SC3 sold so poorly.
Personally i think the reason is that the platform was already flooded with so many fighting games that people just weren't interested anymore.
Which makes my point stronger, that if DOA was on PS2, it would not sell as well as on a console where it would be the only fighter for a long time (until SC2 came out on Xbox).
If i'm wrong, i'm wrong, but i just think that strong sales of DOA3 (whatever the figures are) and low sales of all the fighters on PS2 is quite strong evidence to my theory.
DOA2:Harcore proves your theory wrong.
#1. It was on the PS2
#2. It was a US launch title and released 2 days before Tekken Tag.
#3. It sold like complete crap on the PS2, despite only having a single fighter to compete against.