Yeah, I pretty much agree. Just in case, I've finally seen the calculation for Issei's Balance Breaker. Here it is, and yes, it's a copy-paste.
Balance Breaker breaks the balance
Issei completely destroys a mountain without even boosting (to the extent where it's said to have vanished) and manages to dispel Kuroka's spatial barrier through sheer brute force using his Dragon Shot. Let's do a quick calc for pulverization using an updated value for average mountain mass according to the Physics Department of the University of California:
http://physics.ucr.edu/~wudka/Physics7/Notes_www/node19.html
Average mountain mass: 3e14 kg
Density of rock: 2600 kg/m^3
Average mountain volume: 1.154e17 cm^3
Pulverization of rock: 214.35 j/cc
DC of Balance Breaker Issei's Dragon Shot:
2.473e19 J or
5.91 gigatons of TNT.
That would be
Island level according to our
Attack Potency page.
Crocell vs Rossweisse
I also saw the calc for Crocell vs Rossweisse's light.
YES! YES!: [He's indeed screaming like a fanboy, but you can't blame him

]
I know. I've already been told about Crocell's Sacred Gear ability from Governor-Azazel. Also an ability which uses sight has a weakness which is very easy to exploit!]
Even though she's under the gravity, Rossweisse-san activates a magic-circle with her trembling hands! FLASH! A flash lightens the surroundings.
[You are too naive, sister! Mirror!]. A mirror appears from the magic-circle which is in Crocell's hand, and he tries to block the light.
[Due to the characteristics of my ability, I have powers to cover those weaknesses. That's why I have summoned a mirror.] Crocell smirks.
Rossweisse-san's attack was seen through?? No, that isn't it! Rossweisse-san made the magic-circle under her foot glow stronger! The flash which was reflected by the mirror hits Balam! That instant, Rossweisse-san and Balam glowed, and the light envelops the surroundings. When the light stopped, the one under Crocell's gravity was Balam! Rossweisse-san was at Balam's location now instead!
Terrific! A magic to swap each others' locations! Having the mirror reflect that magic was just a requirement for its activation! It's a swap done where she already read through the opponents next step!?
I knew this day would come eventually! An actual, honest to God relativistic feat! :cry
Since the mirror appeared in front of Crocell's hand and it's said he tried to block it (implying the mirror was either not properly positioned or not large enough to intercept the flash), I'm going to assume he moved his arm at least 1m. Failing that, I'll calc for speed using the minimum distance required for him to literally lift a finger. Just a finger.
Fight was taking place in melee range inside a shrine, so a 3m distance between them seems reasonable here.
Distance the light moved: 3m
Timeframe: 3/300000000 = 1e-8 seconds
Distance Crocell moved (high end): 1m
Distance Crocell moved (low end): .04m
Speed of Crocell (high end):
100000000 m/s or .3333c
Speed of Crocell (low end):
4000000 m/s or .013333c
Relativistic mid-tiers
inb4 "it's magic and not real light"
>it's an omnidirection flash of light like a camera flash or the Solar Flare, not a laser or a weapon made from light
>it reflects off of mirrors and generally behaves how real light should
>Rossweisse is a Devil and should not be capable of producing the fake light that Fallen Angels do.
Finally something after the light speed statements?
I'll look for more later.
@RoboVolcano4
Thanks a lot. Those are the calcs I've been looking for. It's going to be easy to pick out the good ones now. Though I'm a little wary of using stuff from animevice. Some think Issei's Solar System level, and that he can beat Toriko god tiers.