Mike finally sort of succeeded (you would have had to get a -10 to get what you exactly wanted, spoiler alert, since Mike doesn't actually have any explicit Mana abilities). Many of the Skills you get also depend upon your character's build. Mike got a more spirit based version of mana manipulation. While it may not let him make fancily shaped mana projectiles (as Spirit Energy, even though it is technically Mana for the gamers, isn't very malleable and this is a Spirit Energy controlling technique), it should still allow him to do several of the things he wants to (including making a spirit sword kinda like Kuwabara's from Yu Yu Hakusho) and it will provide some nice buffs to his spirit techniques (as Mike's current skillset is more based upon Spirit Energy (even though for the Gamers its all MP). 

Mike is using Spirit Energy

Ren is using Mana. 

Lucian is using both Spirit Energy and Mana. 

Sasha is using Mana and Ki

Erica seems to be using just Spirit Energy for now (and even then she seems to be barely using that, just going for physical techniques, which there is nothing wrong with as there are plenty of people in the Abyss who don't really use any form of Energy, like that Armored hunter from before, he didn't use any form of Energy). 

and Silas is using just Ki. 

while the Gamer power turns it all into Mana, there are still differences in how the Skills work.