I actually think they should count the ticks on the point (specifically for 2CP maps, not for hybrid).
This is a great idea I think, it would eliminate draws significantly. What usually happens is once you capture Objective A in maps like Hanamura and Volskaya you need to make a quick and huge push to Objective B and try to get the defending team while they are reeling.
One of two things usually happen, either you push as a team quickly, everyone coordinates their Ults perfectly and Objective B is captured. This unfortunately, is the perfect scenario and doesn´t usually happen.
Or what will usually happen is youll make a quick push, youll get the capture point to maybe 2/3 of the way, the enemy team will respawn and being so close to Objective B they regain hold of the capture point. And now its basically a stalemate if the enemy team is competent enough.
Using the CPs bar as a measurement of a Victory or Loss seems something that should have been implemented from the start and I cant think of any negatives as to why it shouldnt be.