BF4 was really broken on release. Bugs/lags/crashs etc. But its getting better
It wasn't as broken as Rome 2 was but the devs still halted DLC development to fix the game first (I'm not saying they fixed it, but they did something).
No, they dont play with you, they charge that straight from day 1 and rip you again on minimalistic expansions, calling them huge progress.
Well, in the case of Battlefield (3 or 4) you get the full game and ALL the DLC for 100€. In the case of CoH2 on the other hand you have to pay over 200€ for the game and the DLC already released. If Relic happens to make more DLC, you'll have to pay even more.