Can't old players or slow trainers improve in quality through trainings or matches?

[Houzz]

Al Svanberg's tests tell us that a match is an equivalent of level 4 drill, plus MoM on top. But when playing a match, your players train all the skills, not just those they need. Your tactics is only good if you don't want to go into micromanagement. It doesn't require additional efforts, but it's ineffective and consume as much time as training.

Yes i know but it depends on something,

I like play a match more than training
Depends on oppo tactic in match. If i play with Own half, condition loss around 10-15%, and gain the same if good result