Too high landing speed is not neccessarily resulting in bouncing. Sinkrate and aircraft pitch are also important factors. I have witnessed multiple bouncing even at stall speed. If the model hits the tarmac too hard, and the nosewheel spring is hard as/harder than the mains, the next result will often be an exessive nose up attitude.....and the show begins. I have had silly high speed landings after flame-outs, wanting to land at the runway. They were not bouncing even if the speed was too high. Many nosewheel struts are delivered with the same spring as the mains, so I change or cut down the nosewheel spring.
edit: that said....correct speed is best
