A player with 810 CP has a flat increase of 1,595 to all of their pools (before multipliers) and 145 additional CP in each colour tree.
It's a massive advantage.
Whilst the player above is correct that you have to make it up with experience / skill, which is obviously possible - I'd argue that on the whole, that'll only apply to average builds and players. Top tier players on most builds they've seen fit for the task and those who pump out 1 bursts on 2-3 button meta builds probably still leave you with little chance.