I was still unsure about why RealTemp and CoreTemp are reading the TJmaxx differently (also causing a 15c change in temperatures), so I posted a thread at OCN for people to voice their opinions and talk about it. Here's the link, it's a pretty good read:
http://www.overclock.net/intel-cpus/...-realtemp.html
(If I'm not allowed to link to outside forums, please inform me so I can take it down.)

And another member just did a test to see where the cpu would actually throttle, and which program is correct. For now this test only applies to the e2xxx and e4xxx series that are the M0 stepping.
http://www.overclock.net/intel-cpus/...tjmax-dts.html