Don't know about 4G in Peru but if I compare the speeds I get in Blighty with those I get in various locations in France, Switzerland and Germany I'm inclined to believe that Peru may well be faster. (My experience is not covering the whole of these countries, obviously, but I am travelling widely in those countries and I do have "anecdotal evidence" for scores of locations in F, D and CH (and a little in Spain).) So perhaps our "world-class" infrastructure is getting a bit long in the tooth now?
(Incidentally, there's a similar picture with old copper-based net access: I get consistently higher speeds on the continent than in the UK. Fibre is different though, here the UK seems to be in front, at least sometimes. YMMV of course.)