I can't see a gain there at all. I use 8 unevolved cards in my training deck, my normal and ELO tournament deck memebers are all fully evolved, but always use pills to try to win with 2 if I am playing EVO style or 3 if I am not. I can not see any gain at all to playing to always lose.
Yes i used this method once as mistake! I was playing evo but i drew all my 4 evolved charachter, than to let the other player win (since he has only unevolved chara) i decided not to play any pillz. I ended up to win (like a miracle XD) and what a surprise... i was awarded more that 30 points O__O