Why do you get +x LP when you win and -x LP when you lose?
Since LP is based on MMR if users LP and MMR are balanced the above example will be correct. There are a few cases makes LP and MMR unbalanced which makes gives LP advantages over MMR:
(assume you'll get 20LP next win)
you have 0LP you lose twice win once. (your LP is same but MMR just decreased) So the next win makes you win ~16LP
you have 0LP and your in the edge of your league say Gold V. You can lose 1000 matches and still be in Gold V. The first win you get will give you 1 LP or so...
you have 100LP you 2w/0l then you quit a match. Your MMR increased by 2 wins but you still have 100LP. The next match you win(after the promotion series) you'll gain ~28LP.
if you didn't play for a long time and LP decayed. This happened to me. My MMR was around 2.5k I didn't play for some time. I decayed down to Plat III. I gained 60LP next win. After promotions I jumped from Plat III to Plat I since my MMR was so high for my league.
you left match during queue. You lost LP but the MMR stayed same so you'll gain a tiny bit more LP next few matches until your LP and MMR are balanced.
There are some extreme cases between Diamond I - Challenger. Riot uses a special LP calculation system there to avoid challenger number increase its capacity.
I can't positively say such thing exist but probably in LP system win streaks matters and allows you to jump league faster but it doesn't matter in MMR system
There are some extreme cases between Diamond I - Challenger. Riot uses a special LP calculation system there to avoid challenger number increase its capacity.
I can't positively say such thing exist but probably win streaks don't matter in MMR system but in LP system it matters and allows you to jump league faster.
