can someone tell me the difference between a 1jz and a 2jz

[Sonyps307]

I think 1jz is 280hp and 2jz is 320hp and the 2jz has better longer lasting turbos But I think the 1jz is an easier swap and both bottom ends can take 900hp and both valve trains can take 600hp Kind of the same motors with diff. Turbos