No, it is not like the squat. It works basically the same muscles, but not as well, and it does not work the stabilizers, which are very important for vertical jump training. Gains on a leg press do not really carry over well to the squat for the same reason (maybe a little bit), but squat gains carry over to basically every lower body lift, and jumping.

If you really cannot squat, 1.5x bodyweight on the squat would be 3x bodyweight on the leg press (It's actually a little more for some people) In that picture, the guy isn't going deep enough either. Just like the squat, you want to break parallel.

I'm not saying the leg press is bad, but with all the squat variations and deadlift variations, theres no reason to really do it. If you are having trouble with the bar, you really shouldn't be leg pressing, because your stabilizers are weak. Just practice squatting with low weight.

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