There hasn't been much information about the HTC Pyramid but it looks like a HTC Incredible with enhancements: dual-core 1.2 GHz Snapdragon processor (MSM8260), with Adreno220 (nearly as powerful as SGX540) and a 4.3 inch qHD display.

BTW, I just noticed something very important about the LG Optimus 3D. The interaxial distance!
This should be 7cm (or 70mm) as an average human eye distance, for a pleasurable 3D experience (on your 3D TV). But since camera optics are usually more "zoomed out" than a human eye, it actually needs to be wider (eg why Hollywood uses 10cm and up camera sets). About 80 or 85mm would be ideal. Since none of these phones have optical zoom (digital zoom is honestly crap), this distance is that much more important.
Judging by the pictures the distance on the LG seems to be roughly 25mm. So any 3D video shot without zoom (which is 99% of the time) is going to look only 30% like 3D ... the objects will not be so distinguished! The experience will not be so defined (just like those post-processed 3D movies like Clash of the Tits), you would walk away wishing you just saw it in high-quality 2D. So having a 3D camcorder on the LG is pretty much useless, the GS2's camera is actually better (better quality 2D wasting less memory space). This really takes away aot of appeal from the LG.