I only looked at the stage 1 maps not including kickoff.
Ice box: sen and c9 both got rolled that map. Its 50/50 and they each only played it once.
Fracture: sen has not played it and C9 only played one game. sorta 60/40 in favour of C9. dont know how sen would look
split: probs in sens favour 70/30.
pearl: probably 55/45 in favour of Sen cause of how good they look recently but i am okay saying 50/50 cause C9 are 3:1
Ascent: cloud 9 played it and sen has not so probs like 60/40 in favour of C9. maybe even 70/30 cause we arent sure how good sen is on that map.
Haven: probs one of sens best maps now and C9 look okay. 70/30 in favour of Sen
Lotus: both are sorta bad on lotus but I guess C9 looks slightly better but id say its marginal. So its probs a 50/50
Overall:
Sen: Split, Haven
cloud9: Fracture, Ascent
50/50: Pearl, Ice box. Lotus
Even if you give C9 Lotus its not like they are some god tier team on every map. I think this probs goes 3 maps. What are your guys opinion.