I have throw both. I would say that by far the No Mercy is the best ball. I don't know why your No mercy (wally) picks up early, but mine are drilled almost the same. With the most recommended drilling. And the Total NV hits pretty solid, but it picks up so early that it is very hard to control. I have low revs and I can't control the NV. It left alot of splits and 4 pins for me too. Now the No Mercy is a big hook, but it picks up very very late on the lanes, so it is very controlable and the snap is so vicious, all you have to do is hit close to the pocket to get a strike. I average about 215 with No Mercy (buy far my best ball out of my other hammers, ebonites, brunswick, and storm balls that I have) and i average about 180-185 with Total NV. It seems that when I throw each ball and see the results, that the No Mercy is totally out of Total NV's class, it is much higher.
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Crush them don't knock them down!!!