^ You see my top rating and his current rating - I'm actually below him right now. It's just glitchy sometimes whether it shows someones current or top rating.
But, in regards to that it would be because you started this season based off your elo from last season.
Your S3 starting elo was: Your s2 top rating - 1250 /2 , + 1250 (or something like that) -- So I started this season around 1350 , while a new person to ranked started around 1250 - and someone like Chemical started around 1050. So it's still W/L based, it's just you may be higher due to your s2 ranking. They didn't want to do a hard reset, making every single player go back to 1250, so they did a soft one where you went down a bit. Hopefully I explained that clearly.