TradeMark wrote:you dont need to look at the shape of the unit in OTA models because the textures are so different.
looking at shapes takes lots of brain power. looking at colors takes almost none... same as comparing square root and one bitshift operator speeds...
This image, we are talking about? The one with the identical white tracks, the identical black body, the identical teamcolour on the turrets with the grey barrels?
The only difference is shape: Two barrels vs one, long vs short.
Compare:

Teamcolour and grey patterned body, grey turret with black bands, vs high contrast black and white body, teamcolour collar on turret. The difference is MOSTLY colour, rather than shape.
The problem with .s3o is mipmap compression (muddy texture) and normals (dull colour if rescaled). Its mostly technical. Yes, if a texture artist makes the whole unit grey then puts tiny details all over it, it will be very hard to see those details. For Mr.D's models though, this is a non-issue, his are an improvement over the 3do's.