Some days ago I made a comparison, in the same System, same Arm, same Headshell, same cables ....
It was quite interesting :-)
Screensavers
Lyra Atlas Lyra Titan i ... to make a long story short:
Both are very good cartridges, but the Titan still amazed me
[Even after all those years].
The differences are in the tonal preference what the Listener likes to hear, for example the sustain of instruments (Atlas) or the linear reproduction of voices (Titan i)