So heres the big question:
Are these differences only perceptions? Or, is the speed
of an object and the time elapsed in its movement somehow
relative to its size?
No.
a mayfly (24 hour lifespan ) and a ocean quahog (400 year lifespan)
both share our time measurements.
although the lifespan of the ocean quahog is 146,000 times longer
than the lifespan of the mayfly there is no difference in the measurement of time.
there are living trees that are part of a clonal colony
whose roots are 80,000 - 1,000,000 years old in Utah.
this root system is the largest living organism and the
oldest living organism.
https://en.wikipedia.org/wiki/List_of_oldest_treesthe Pando (quaking aspen)
https://en.wikipedia.org/wiki/Pando_(tree)
also the Bible recorded a list of people who lived a really long
time compared to our current lifespan.
but all of the above lifespans share or shared our time scale.
for us humans our time measurements and our distance measurements are valid in the smallest scale of the micro or the largest scale of the cosmos.
those tree roots may perceive the passing of a thousand years
as we perceive the passing of a single year.
but perception of time between species of life cannot alter
our time measurements nor can we alter their time measurements.
