Depends how heavy your bike is really, on some bikes the weights too much and pretty much anyone would struggle to bunnyhop on them.
It has little to do with the weight. It mostly depends on the geometry of the bike and the proper adjustment of the handlebars. You have to move your handlebars around and find the right position. You have to make sure you have the right size bike. A 20.75" toptube makes a huge difference from a 20.5" toptube. It also depends on how far back you rear wheel is sitting from the frame.