Agree in part.
A tall marking forward needs to be able to run patterns and lose a defender - more a target than an opportunist. So they need that longer build-up. Smaller crumbers do not typically go for long leads - they shoot in and out of groups in very short bursts.
Walla would never make it as a top-end 100m runner (despite he being put up in the GF sprint) - because he is simply too small over that distance, against similarly powerful yet bigger opponents - like Dangerfield - or Majak - but he will probably have greater acceleration. 100m sprinters are usually ‘mid-height’ 6’ or so. If they are taller, than they need a lot more muscle to move the frame - and that adds weight, so it’s an ‘arm’s race’ excuse the pun. Walla’s stride would be far shorter than say, Issac Smiths - and I highly doubt he would match him at 100m.
It’s an interesting topic, really. Fast/slow twitch, upper-body momentum, running uphill vs downhill, and so on. I don’t think there is a black&white opinion on this, since it’s one of those things where everyone is slightly different.