The difference between tier-1 teams comes mainly from their support players:

On that part, you can really trust my experience, and share your questions to any tier-1 player. We basically all played in different rosters, tried different players, build different teams, some were successful, some weren’t. And the conclusion is almost always the same: ‘the support duo’ didn’t work out, or the support players weren’t skilled enough, or even the team chemistry just wasn’t there. Do not get me wrong, I am not comparing support players with core players, all roles require the same amount of skill, game understanding and experience. This conclusion is actually very frustrating when you try to build a team, but it explains itself.

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