I can tell you that I captured a 2018 BE-100 last night. The Kemper always struggled to get an accurate Profile of this amp, Tonex nailed it. Although the Tonex capture had more gain and I had to back gain down a bit on the capture but it sounds more like the amp than the Kemper Profile.
Tonex does not roll of as well as the amp. Interestingly enough the AXE model of this amp rolls of extremely close to the real amp and the Kemper roll off is totally different.
Comparing all three of these (Kemper, AXE, Tonex) back to back to back against the real amp is really interesting. The AXE III models are so well represented using the latest Firmware on the AXE. What a testament to Cliff Chase and FAS, the models are just outstanding at this point.
Software is the key to all of these products. Kemper never updates their core Profiling algorithm so the same Profile you made in 2012 sounds just like the one you make today, great, good or bleh. FAS updates their software constantly and while you don't have to update, if you don't you don't get the goodies. You also have to literally "redo" ALL of your amp blocks in ALL of your presets when there is a major update. FAS customers put up with this because the updates make the product better.
The Kemper Rig Manager BLOWS TONEX AWAY in my opinion. AXE Edit is the single best device editor and device manager I've ever used, very close 2nd to Line6 and HX Edit.
None of the aforementioned products have a License Manager... but I understand why IK needs/wants this, although not so much with the Pedal other than they are selling you the 1000 captures they have made in Tonex Max, however the Kemper also comes with 100's of Rigs so...
The $399 price tag of the Tonex pedal and included Tonex Max/Amplitube 5 make it an incredible value and easy to overlook some of the negatives but time will tell how well Tonex and the pedal hold up.