Yes, if you insist on using VC2013, you have to recompile all of Panda using VC2013 (adjusting the makepanda script where necessary); you may have to compile some or all of the thirdparty packages as well. In this case, the issue seems to be that Bullet is compiled with VC2008.
It’d be a lot less painful if you used current CVS Panda as a starting point, which we compile with VC2010, and possibly the thirdparty packages that I compiled with VC2010:
I’ve heard that some people have had some luck with using these thirdparty packages to compile Panda in VC2013, even though the version is mismatching.
Still, I’d suggest that you switch VC2013 to use the compilers from the Windows 7 SDK (ie. the VC2010 compilers) if this is at all possible, or otherwise using VC2010.