The Vita cut has helped on a revenue front but only marginally.
If we assume the Vita would have sold the pre-cut average all 5 weeks and we simplify to assume all units are WiFi ($50 pricecut) we have (USD only for simplicity)
Incremental revenue from additional post-cut consoles = 10725 units * $200 = $2.15 million
Decremental revenue lost from lower price = 31,875 units * $50 = $1.59 million
------------------------------------------------------------------------------------------------------------------------------------------------------
Revenue Gain = $0.56 million
so roughly half a million in incremental revenue over 5 weeks for the console. This is obviously simplified as it assumes Killzone accounted for 0 incremental units, ignores that 3g units got a $100 cut, and ignores costs altogether (hard to say if this increased profit at all - though most costs would have been 1-time for promotion, working with vendors, etc and are likely low. Also Memory cards would need similar analysis as they got drops as well.
I'd say it was obviously the right move, but Sony surely hoped for a bit bigger bump than they got. Long term it seems clear that more software will sell and it seems unlikely that a Vita would need to sell more than 1-2 titles to be profitable if it's not standalone at the new price. It also pushes them farther down the path of lowering manufacturing costs as they tend to lower as more and more units get produced
