re: Poker & playing KQ suited
Need more information.
Like, your stack size, his stack size, the average stack size, his playing style (does he steal a lot, or has he always shown down decent hands), where you get in the money, and if you're already in the money where the next significant step up is.
The cards you hold are not always the biggest consideration. If you read Harrington on Holdem for tournaments he talks about situations that you should fold almost everything, and others where you should be shoving with any two cards.
KQ is a decent hand but will lose to Ace high when the board misses. Worth a shove when you're short stack, worth a raise, especially from later position when you have sufficient chips, but generally, it depends.