I find that I base my rating of vehicles on thier utility, not necessariliy their realism(which i voted for). For instance, the Hiss tank has an unrealisticly high profile and terribly exposed gunner position, but its sloped armor design coupled with its speed and versatiliy make it an excellent Cobra track. Likewise, on a more recent vehicle, the battle hornet is a completely unrealistic flying machine, but if used as a quick striking close air support platform that travels with armored columns it serves a usable purpose.
I have to agree that the pogo is an unrealistic vehicle and additionally has a very low utility no matter how it is employed. I don't like vehicles of this style.