Learn to read Michael. I mentioned the 3DO along with the PC-FX in the sense that many of both systems' games were ported to other systems (PSX and Saturn) that also happened to have much larger and better libraries. I wasn't comparing the library of the 3DO to the PC-FX. 
Very few of the unique titles on 3DO were ported over to other game systems,or ported well for that matter. The majority of 3DO titles were what was popular on the pc and mac platforms. Need For Speed was a great example of this,as the Ps1 and Saturn ports sucked horribly,but the 3DO and Pc were awesome. keranu mettioned pre-rendered stuff,yea it happened,alot,but this was 93-early 96,and the same thing also was occuring on all the other systems up untill mid 96,like D,StarBlade,Burning Soldier,Microcosom,NovaStorm,ect.... this was commonplace on all systems.
Alot of people have selective memories concerning all of this,and dont perfer to remember how bad the USA launch titles on Saturn,and esp PS1 were actually. That and many people did not own a 3DO untill after its death and only then got a couple of well known titles,not the best ones,and judged the system this way. Horrible.Need proof of how bad early PS1 was? Motor Toon Gp baby! That,Toshenden,Jumping Flash,fun but basic looking. Alot of EA and Crystal Dynamics titles were ported over in late 95-early 96 simply to get a easy game sale on the newer systems and the ports were not up to par with the 3DO versions in some respects.
As far as 3d goes on 3DO,yes,it could do it,and well. It could easily match a 486DX Pc or Mac. Daedlious Encounter,Wing Commander 3,Road Rash,Need For Speed,Space Hulk,Po'ed,and Alone in the Dark 1&2,Slayer,Megarace,Wolfenstien 3D proved this.They all matched the Pc versions and Mac versions running in high detail easily. 3DO has the best 2 versions of D. In some aspects you could even say the 3d was better in some ways,at least in the early days. Examples:
Shockwave 2 for 3DO looked way better then Agile Warrior or Warhawk for PS1,and played far better. Need for Speed for 3DO looked far better then Twisted Metal 1. Way of the Warrior murdered MK2,Battle Monsters, and Street Fighter the Movie for Saturn. Way of the Warriors 3d background engine was the forfront for what became Crash Bandicoot.
The 3DO Roadrash killed the ESPN Extreme 1 game for PS1,which was a blantent copy of Roadrashs graphics engine and play mechanics.
The 3DO had a 32-bit Arm60,with a math coprocessor. 2 accelerated video co-processors doing cel work at 640x480,which is typically unheard of with PS1,as most games ran in 320x240 low res like modes on PS1(they didnt master high res modes on PS 1 untill around 99 with Ridge Racer 4 and later titles).Capable of 9-16 million pixels per second (36.8-64.9 megapixels interpolated), distorted, scaled, rotated and texture mapped.The board had a custom Sport DMA mode = Super-fast bus speed 50 megabytes per second. No other 32-bit system could do this period. It had 36 seperate DMA channels for data processing. Ram just the same as PS1,2 megabytes of RAM
1 megabyte of VRAM. Sound DSP chip was 16-bit stereo sound with
44.1 kHz sound sampling rate and fully supports Dolby Surround Sound.
You cant really appreaciate the 3DO system visuals unless you use s-video. It really shines then.
Simple fact is the 3DO died before its prime. It coulda had another good year technically,if not 2,but it never happened.
Pc-FX,it was designed to run jpeg based FMV and 2-d graphics,and its best titles were never ported to nothing else. It had no resemblence to the 3DO other then both used 32-bit Risc cpus hardware wise and maybe both having the Graduation titles released on them I think.....