Geometry Dash SubZero

I have been playing all the geometry dash games and here is what I have to sat about Subzero. Gameplay: unlike the other versions of geometry dash Subzero has a steep learning curve due to it only having 3 levels. But what makes it harder than Geometry dash Meltdown which also only has 3 levels? Well when you compare the both of them what stands out to me is that Meltdown is a decent amount easier to beat. But in comparison Subzero is the opposite, since the hardest Meltdown level is easier to beat than the second level of Subzero.