I do have that kind of feeling a bit too. Gejutel is just not the fighter type in my eyes, although he may be well beyond average on that given that he is a clan leader, hehe~ I wouldn't be surprised if we don't see anything at all. I also think Ragar can handle Frank just fine; perhaps he would hold back a bit since it is at Lukedonia and their lord wanted to see him alive.
Well, he's older than the rest of the current Clan Leaders, so he's stronger than them just based on that, but I don't know how strong he'll really be. He should've been stronger than Franky during this flashback fight, but at this point, I would expect Franky to surpass him as nobles don't normally train/level up/that crap; instead, they just gain a SW and get power that way.
We've been told that Ragar and Gejutel failed to capture Franky, so it could be that Ragar could've, but Rai stops it, or that he didn't possess enough power past Franky's level to be able to subdue him without killing him. Gejutel did say that one clan leader would've been enough to kill Franky.
I have to say that it has been a long time since I last was so interested in Noblesse. The last villains were not really interesting to me, even though it was one of the Elders. I thought they were pretty bland and it felt too much like the same pattern again - strong enemy pops up, they're somehow able to fight back but get dominated in the end - Franky and/or Rai show up and save the day.
but enough nagging, Franky's past is really interesting and I'm really looking forward to see what happened back then seeing the clan leaders and especially Gejutel is always a plus for me too, curious to see how much of a fight he can put up.