Are those numbers confirmed? If so, the rumor of about only 70 new poke are true, but it's closer to 100 with the mega evolutions. Honestly, I'd praise the, on that. Quality over quantity for one, and for 2, there's reportedly a big emphasis on the older pokemon, so that also makes sense.
Lastly, with so few new poke, it should make it easy to feature them ALL in the first few XY TCG sets.