Robertson went from Dundee to Liverpool via Hull and established himself as one of the best side backs in the elite.
But the Reds star and Tierney both compete for the same position with Scotland, leaving boss Steve Clarke with an embarrassment of wealth.
Still, Robertson thinks the comparisons between them are getting tedious and they would accept any decision Clarke would make once the international games arrive.
He said to Podcast Lockdown Tactics : “I already talked to KT about it.
“Me and he are probably sick to death from everyone who compares us. A good performance from each of us and one of us is better than the other. These are just two players who play at a good level.
“It gets a little difficult when everyone in Scotland starts to compare you. Steve Clarke will have his own ideas and whatever he does is for the best of the team. Whether playing one or two of us, we both have to deal with this. ”
Tierney was named Young Scottish Player of the Year for three consecutive years from 2016 to 2018.
Robertson also won the award playing north of the border in 2014 and has nothing but admiration for the Arsenal man.
“KT is a fantastic player, I watch him a lot and he is excellent at what he does,” he added.
“He had problems with injuries, but now that he’s back, he looks special. ”
Tierney has played in eight of Arsenal’s nine games since the restart.