Analyst Michael Pachter is sticking to his prediction that Grand Theft Auto IV provided more of a bump to the PS3 than 360 in April, predicting 290,000 in sales for Sony vs. 275,000 for Microsoft's box. It's worth noting though that Pachter also predicted PS3 would top 360 in March, days before the NPD reported an Xbox 360 win.
Now, does any of this mean that either of those systems (or the sales of those systems combined) beat the Wii? No, of course not, don't be ridiculous. Pachter predicts that 600,000 Wiis flew off of shelves in April, likely aided by the release of Mario Kart Wii and the unslakable waggle thirst the general populace seems to have discovered.