That seems about right.
Just curious: how many of the trials can you complete using the editor? If possible, a percentage would be great.
Excellent! I’ll take a look into that. I finally finished SSFIV Trials and will probably play AE and SFxT. If you need help with the QCE YouTube guide, let me know.
I used the editor for the more challenging 1 Frame combos and even then I had to use 2 QC for some trials. This was in Vanilla though. From what I’ve read, (In a previous thread/post I asked about the Editor) the trials are only for Vanilla SFxT. I’m not sure how effective the editor is in it’s newest incarnation, when used in the Vanilla trials.
There were several preset QC that were actually trials, and I did a lot of the trials manually, working on execution and knowledge of the engine.
So in Vanilla, you might be able to do (and this is only a guess) around 35% counting the presets. Unfortunately, I don’t have any info about the percentage for ver2013. 
What you can do, is to piece the trials together. It’s similar to breaking down a combo and doing it slowly and building up execution to get the entire combo. You create QCs for parts of the combo, then do a part manually, then execute another part with QC. This only works on trials that require 1 bar/section.
You can also use one QC and do the rest manually. I did this for Christie’s 17 and I think Bryan’s 17.
As Nerfherder said above, doing the trials all manually now, is mostly pointless, as the engine has changed and you are building muscle memory for non-working combos.
Though, it would teach you overall execution and might make combos in the updated engine easier to adapt…
Using a few tricks I would say it’s possible to do 100% of the trials using quickcombos. Trials that require 3 bars can be done with 3 gauge reduction gems active. A 3 bar trial requires 4 bars when done with the quickcombos. 60% gauge reduction is enough to perform 4 ex moves in a combo. Or a quickcombo with 3 bars.
I did Cammy trial 20 with the quickcombo editor and 3 gauge gems active. I can do it manually now, but I learned the timing with the editor.
One problem is that the preview in the combo editor is for ver. 2013. and the trials are ver. 1.00. So getting the timing right can be a pain. Zangief trial 20 took me a few back and forths. BUT ! With patience, a few tricks and time you should be able to do 100% of the trials. Some of the needed gems are dlc. I don’t mind that. But some ppl would.
To be clear. The presets will only get you a few of the trials. You need the advanced combo editor to do them all.
There weren’t as many gems or variations of gems when I did the trials, so it’ll probably be much easier now.
There is also a “glitch” during trials where your Super bar will refill to max while doing a lengthy move. (Sakura’s EX SRK, some of Christie’s moves) I used this to my advantage when doing trials, though I didn’t find it until I was 85% done. If the trials are ver1.00 then this should still be there.