You'll run 10,000 meters on an xc course or track in a spike below 2 cm stack - but suddenly when running the same distance outside a team's singlet you need 1-2 more cm stack height? To me this seems whacky. What would running in a shoe with that same stack height, but a road plate with continental/goodyear rubber in the forefoot look like? The Japanese ran faster than Americans on the roads at all distances and up until recently were using shoes with 14-24 mm stack heights on a wide scale, for instance. You'd either run faster on the track and xc in a plated shoe or faster on the roads in an unplated racing flat.