The vita didn't have a 54.2% hardware failure rate and a horrid controller that requires alkaline batteries.
The 360's controllers could be powered by rechargeable batteries, so that's a silly thing to nitpick at. The Vita, on the other, requires proprietary memory cards that cost 4x as much as the SDHC cards compatible with Vita's direct competitor, the Nintendo 3DS.
Sony Vita 8 GB card = $29.80, 3DS compatible SDHC 8 GB card = $7.74
Sony Vita 16 GB card = $39.99, 3DS compatible SDHC 16 GB card = $9.99
Sony Vita 32 GB card = $59.00, 3DS compatible SDHC 32 GB card = $12.99
I mean, are you kidding me with those price differences?
The RROD was a major issue for the 360, no doubt about it. But I'll take the software library it compiled over its lifespan over a device whose own manufacturer rapidly ignored after release.