I don't want to post off-topic in TAT's thread about Deprived. We can continue this discussion in Deprived's thread or via PM.
I'm thankful for Deprived's project, thread, and information in general, it helped me understand a lot about estimating a mining profit and difficulty rise.

Anyway, if you are holding VIRTUALMINE, or thinking about buying it, you should check this new thread calculating the possible profits: https://bitcointalk.org/index.php?topic=240556.0 (or do the math youselfs).