It's not really germane because the term is meaningless and entirely subjective. We can only judge by the actions of the individuals and, since the Donald has never had people torn apart by dogs, blown apart by heavy calibre machine guns, publicly murdered any of his relatives, tortured, starved or brutalised his population, I'm going to take his side against the guy who's done all those things.
Of course, but the bar for judging Trump's madness should be higher than it is Kim's and should be considered relative to the fundamental requirements for being President of America. The simple fact is that we can't rule out the possibility that Trump is sufficiently psychologically unhinged that he could lead us into a nuclear confrontation with NK for reasons more about his own psychological comfort than bumbling politics. That is a mad situation, at the very least.
Better than that, here's one (by keen Islamist Mehdi Hasan) that says Trump is definitely madder. Seriously, there appears to be no depth to which the frothing-at-the-mouth anti-Trump lobby won't sink.
https://theintercept.com/2017/08/09/...t-kim-jong-un/
It's all just posturing from Kim though, isn't it? Designed purely to impress his people and make him seem powerful. The Don knows that the Kim dynasty isn't suicidal and launching an attack on Guam or indeed any other US ally would result in the country being blown to kingdom-come and therefore the end of said dynasty.
Well my opinion is that he wants a nuclear arsenal to protect his dynasty from being overthrown in the same way that Gadaafi was. I assume that Kim is actually a very intelligent man and even if he believes his own bravado, will know that the use of a nuclear/conventional weapon on South Korea/Japan/US territory would result in the entire world (including maybe even China) deciding that he needed to be removed ASAP. This is not a battle that he would want.