Jusis very much backs up what he claims,obviously Mykolas pretty much always manages to exceed expectations,but the track record for the coach with My own name[like with the paralympic athletes he coaches] is very positive.
Martynas clearly developed later,much more like his Dad than his baby brother,[also looks much more like Dad,so him taking dad's route to stardom rather than his own is kinda poetic]it would almost have been too insane if he had started throwing bombs before or at the same time that Mykolas was.
Also,i saw on Lnk last summer Mykolas claiming that he thinks Martynas is even more talented than him,and could go farther,now i scoffed at this originally,but I don't really see Mykolas making this claim just for the lols,and hey now at the very least we should be safe from a bad blood jealousy fourcade issue.