Long time lurker here.
This seems like pretty damning evidence to me, I don't understand the backlash its getting. If you're all so sure that Jan is not Jace, how did you explain the Tactical Talk video? It was uploaded on December 23rd 2011. According to the timeline on lolcow.wiki, Jace had no internet presence at that point. Sam Hyde specifically says "parkourdude91" in the video, many Jace-isms are present, and Jan is said to be the writer. The tactical talk video seems to be the most damning piece of evidence.
If we add it all up, how do you believers account for all this evidence?
-Jace and Jan look very much alike.
-Jace and Jan sound very much alike.
-Jan's mother is named Gayle, and sounds exactly like Jace's Gail.
-There is a lot of Jace-ish stuff connected to Jan (tactial talk lingo, parkour, CoD, etc. )
-People relate Andy Kaufman to Jan on multiple occasions, a comedian known for big hoaxes.
-Their connection goes all the way back to December 23rd 2011, when Jace was completely unknown. How likely is it that one of the first guys to find Jace is someone who looks/sounds exactly like him?
-Jan's connection to MDE, a group known for hoaxes. They're located pretty close to each other as well.
There are 2 conclusions I can come to here:
1. Jan really is crazy like Jace. He uses the name "Jace" to hide his real identity, just as Jace puts out many false flags to confuse trolls. Sam Hyde sometimes hangs out and communicates with Jan because he's a funny lolcow and a good source of material.
2. Jan is doing a long-con improvisational act, Jace is a made up character.
Conclusion two seems much more likely at this point. It also fits the story that Jan also has aspergers. I theorize that he's put all the obsessiveness that comes with being an aspie into pulling off this ruse.
This stuff can't just be dismissed as a crazy conspiracy theory. If you want to prove Jace is real, find some police records or something.
Also, here's some other stuff I've found:
If you listen at 29:15 after, Jan does his dance, he says "I tried to remember all the lessons, it's hard". He sounds exactly like Jace.
There's also Jan's page from indiegogo which is connected to MDE's indiegogo page.
https://www.indiegogo.com/individuals/346804
He describes himself as having a Kaufmanesque sense of humor and provides another image of himself.