Both sides are the same in the way that, they generally work in tandem to erode the common individual in favor of the wealthy. That doesn't mean the totality of what they do is to that end, it doesn't mean that they aren't at odds with eachother as to how to reach that collective goal at times, just that, pragmatically, it doesn't matter anywhere but on very short, ultimately inconsequential time scales.

These things get planned and implemented far outside of the normal 2/4/6 year election cycle, so it's easy to hide what's actually happening.

Fact is, red tie, blue tie, they're all drinking and merrymaking together, they attend the same parties, they bang the same hookers, and they're in the same corporation's pockets. You have some outliers here and there, but, aside from the occasional filibuster, they do little more than create a spectacle.

None of this is unusual, it's simply how systems of government have been exploited and subverted since humans had the idea the government should exist. That being a somewhat esoteric idea only serves to further the degeneration of a system, much in the same way doing nothing, which is likely what some find so offensive about the idea that "both sides are the same", furthers the degeneration of a system.