The perception that teller mines are drastically inferior to soviet mines strikes me as odd. Personally, I enjoy having a mine that is more likely to have a high rate of return. It deals 500 damage, can only trigger on high value units, and is fairly cheap when you consider the targets it can one shot.
60 munitions to outright destroy a T70/SU-76 or lower seems like a pretty good deal.
That said, I realize its overall utility early game is quite low and does reduce the number of counters available to the German player, but its late game potential far exceeds its counterparts.
Reasonable points, were it not for the Ostheer's critical, and often desperate, reliance on early game munis. By the late game I don't really need mines as I have pretty good tanks and shrek-equipped infantry.