How do the visuals on the Nintendo Switch compare to those of the Xbox 360 & PS3?

[JEMC]

Wii U was already capable of producing better visuals than PS360 thanks to it having more RAM and a more powerful GPU. The Switch, even in handheld mode is more powerful than Wii U thanks to again having more RAM and a newer and even more powerful GPU, plus also a better CPU.

The Switch is, therefore, clearly capable of producing better visuals than PS360, and anyone who fails to notice that is because he/she has his own reasons to say it isn't.