well for me I think if you were a regular 50% win rate support you would get people more closer to you, but for me having 70-80 win rate when your support means another player on the opposite side has to match your mmr/ winrate meaning someones gonna lose lane, and or top and mid may have inflated mmr's based on this.
So your trying to play against people who you already know will be up in farm against your laners and they will probably get kills off them too.
Well you have limited gold. So you need to play a carry support to try and dominate the lane and get fed and prey to teemo that your adc will be worthwhile and not just sit in the back like a ezreal who will throw some damage out, but never the damage source to 1 vs 1 an olaf.
The only upside to this however Is your probably going to have better vision map control. Totally bury that blue/ red side with wards. Even when I'm top lane I like to grab a sight stone as we progress so I can take over their side of the map and really be that annoying teemo player.