The iMX233 variety is a considerably slower chip than the BCM2835 and I don't believe it has anywhere near the video capability. These were the same chip line as the 2nd gen 3.5" Chumbys (may have slight variances.) It is still a cool chip but it's not the same setup.
The A13 variety is more powerful, but less widely available and the chip hasn't been used as much.
Interestingly enough, it appears they also have an A13[0] board for sale. It's a bit pricier at 45 euros.