RiotIamWalrus answered a similar question over on the dev blog
"Definitely! DOTA2's Battle Cup system is really cool, but we do a few things slightly differently (based on my understanding as an interested party but not a DOTA2 player):
DOTA2 doesn't use a set bracket - they match teams of similar skill and record together, but your next match isn't set until you enter queue.
Scouting is more formalized in Clash (I think it's possible in DOTA2, but we have a specific phase for it)
Our matchmaking is pretty different - DOTA2 will match you with anyone in your Tier, while Clash still considers MMRs when making matches.
Clash has a consolation bracket for teams that lose in Round 1, while DOTA2 is traditional single elimination.
DOTA2's rewards are a bit more winner focused (Though the Battle Pass stuff makes it harder to make an apples to apples comparison)
DOTA2 has a Champion's Cup at the end of the season for teams who do wel...
Read more