Jasmine rice can NOT be used for sushi! It's not sticky enough to hold together. The fact that it's not sticky makes it good for fried rice, not for sushi.
In my experience it's just barely sticky enough for sushi provided you don't wash it but I don't think the texture is right for that usage. I prefer it for most things though.
might be confusing mushy with sticky - the individual grains of sushi rice is intact and whole. Mushy rice is a grain that has too absorbed too much water, and is burst.
it's has a similar stickiness, the taste is a bit different, but better imo.
it pairs well with asian dishes as opposed to american rices and can be used for sushi.
it's not 1:1, but it's certainly a good substitute when you can find japanese rice.