This is what I posted back on 6 June, "I just opened the box and I am very impressed. The wheels rotate, the windscreen is very realistic, all the accessories are very well done and the figures are some of the best K&C has done. I also got the captured T-34. Man is that one a great piece too."
I did put the two T-34's together and I too found that the RA13 was a bit larger than the WS98. The differences have been discussed at length by others on this thread (different model, etc.), however the difference I noticed between the two was in craftsmanship and detailing. While the RA13 is a very nice model, the WS98 has had much more attention paid to sculpting (detailing) and painting.
If I had the choice of buying them again (the Kubelwagen and the T34) I would wholeheartedly do it without reservation. I would get the RA13 again too. Great stuff from K&C and I think well worth the two children I have had to sell into slavery in order to keep my habit going