If the UK lucks out and gets HB in turn one, you can basically call the game, regardless of what bid you put in. All you need is 2-3 HBs SBRing Berlin and Germany is reduced to an impoverished nation.
That’s one of the problems I have with the tech. The benefit, however, is it really does shorten the end game when you have some stubborn j*** **s with 500 infantry on their capital and you don’t want to spend the rest of your life counter building him just so you can get a victory when s/he won’t concede defeat. (and yes, that was an exageration, with 500 inf you could probably do quite a bit of dmg and save the game, but you all know what I mean.)