Receiving IP and XP question..
I'm rather new to the game and was noticing the amount of IP and XP you're given at the end of each game is amplified if you win the game. I can understand the IP, because you're able to purchase rewards like new champs, runes/pages, and I guess name changes. What I don't understand is how the XP, which I'm assuming is short for 'experience' differentiates. I still experienced the same game, same situations, champion I used..
I only ask because I've noticed the optimal runes are not available until level 20, and I'd like to give myself the best chance to win as soon as possible and reading into them they're kind of important for boosting that chance to win
Thanks, BHF