There's no comparison at all with AAS
Again, the comparison is due to the fact both used magical energy as heat
Ends there.
Also, casually emitting heat is a lie. Had he been emitting heat of such level, the Earth surface would have been incinerated. It's a deduction Holmes makes given the magical energy he had, which until proven contrary, is based on total magical energy.
Also:
''At a first glance it looks like a ring of light that encircles the Earth, but in reality it is an aggregation of some hundred millions lines of light.
Each one of these lines carry extreme damage values comparable to Excalibur, an A Rank Noble Phantasm.''
Hundred millions = 100.000.000 = let's be nice and use 10^9
Excalibur ''''is'''' High 7-A, or X to the 10^9
10^9 x 10^9 = 10^18 or High 6-A (and still H6A even if you multiply it by 10x) /s but not really