That Left vs. Right is only or mostly a distraction is a Leftie/Libertarian tactic. They are of course highly distinctly opposing philosophies, even if the extreme divide between the philosophies is not fully represented in Congress.
I don't know about the banks, but corporations are only trying to buy favor in regulations and subsidies, so that they can be more successful. This is tyranny in that it's anti-competitive and hurts the average citizen, but is nowhere near where the vast majority of the tyranny we're experiencing nowadays is coming from: The GOP's progressivism towards more and more perfect national security, and the Left's progressivism towards more and more perfect outcomes in almost everything in general.
TL;DR: That cartoon pushes the standard commie line that the institutions of capitalism are our biggest problem.
p.s. What it does get right is that, since neither major party cares one whit about libertarianism, in that sense it's meaningless which one you vote for, because neither will advance that cause. (But then that's hardly the only meaningful factor, whereupon there becomes a huge difference between the parties.)