PokerEV software at all useful?

[ata]

Mods, feel free to move/delete this, but I think it might generate useful discussion on using the PokerEV software to identify leaks or trends with styles of play.

I just ran pokerev on my last 70k hands at 2/4 and my graph is diverging pretty consistently. I'm not sure if this is because I'm running bad, if my style warrants it, or if this program is just completely useless, but if someone can assist with interpreting the graph that'd be great.

FWIW I play a pretty standard 21/17ish TAG game. I'm down $3500 in ev in post-all ins over this hand range according to the luck graph.