I'm honestly not sure being top 25 matters. EG already demonstrated that you can take players who aren't known as being THE BEST and turning them into a winning roster. NOBODY believed in C9 after they picked up the basically unknown Jakee and Runi, but they did very well for themselves. mCe is a fantastic coach and I'm sure they will be able to compete even without figurative star talent. They just have to find the players that learn the best and gel with their teammates.
This isn't to say that already being a star player doesn't give you an advantage. But often times it can be more work or a rougher road to retool an established player to fit your coaching scheme / play style, than it would be to mold a newer face to the scene with cracked out aim. Taking the lesser established player doesn't always work out, but I suppose you could say it really comes down to how much you believe in mCe.