It isn't a conventional explosion, it's a bullshit magical explosion we are assuming functions like a normal one
It's a mixture of magical explosion and electrical BS because DD forces the robot arm into a painel that overloads him. Also, if it looks like an explosion, acts like an explosion and affects the surrounds like an explosion, it's probably an explosion. It can also do a lot of things, but it also did normal damage.
It's also not incidental for Cuckoo to be there, while it's a Daredevil Annual, the ARC itself is a ClanDestine crossover arc (whose continuation is in Wolverine Annual. Wow, first time discovering ClanDestine had specific arcs and events) whose story doesn't have anything to do with the Daredevil run at all.
So I went ahead and searched all 22 issues of Cuckoo to see what I could come up; nothing. Well, more or less. Basically she's a mess because 99% of her issues are only using mental abilities that has no physical scaling, her also having a weird variable mechanic that only exists because writers keep writing flashbacks stories, and her only actual feats are either LS anti-feats or durability feats.
First, she's actually a spirit, so she needs to possess a body to do stuff. She got her first body killed, and she got a second one that she uses nowadays, but writers sometimes bring her first dead body sometimes for some reason (I only notice this because of the marvel wiki). Good enough, the only few feats she got were done with her most recent body, so it's okay.
Kinda feats:
Her surviving a
very low-end 9-B explosion in ClanDestine Vol 2 5. Her
instantly being knocked down by robot equal to Daredevil in Daredevil Annual Vol 3 1 (to be fair, she was harmed a few pages before so not at her 100%). Her
tanking a punch of someone who was easily handling Wolverine and needed to be nerfed in order for Logan to win, in Wolverine Annual Vol 3 1. This is more dubious because the gello dude was stronger than Logan, yeah, but it was mostly LS.
These above are the only actually usable physical feats of her, the rest she's either a background character or someone who's constantly only showing mental attacks, which she got a few good 9-B feats, but that's it. She got one good show of speed too btw. Still scaling, probably upscaling, to DD in that department though. She also has anti-feats, but they're mostly LS based, like being tied up by some random metal ropes in ClanDestine Vol 1 7 (she was poisoned though).
