[c-nsp] MDT limit on ME3600x?

[Adam Vitkovsky]

I was just told there is a limit of 250 MDTs on ME3600
That would not be catastrophic on its own, however I was also told that the
250MDTs limit and respectful TCAM carving also depends on the number of PEs
sharing the Tree. 
In other words if I have 10 MVPNs each with 2 MDTs (1 Data + 1 Default) and
I have 20 PEs sharing these two MVPNs, than I have reached "400MDTs" per PE
which is well over the limit. 
Waris please, is this really true?

adam