CAT JL2 Signature transparency vs OTL

I compared two systems recently Avalon Eidolon/CAT JL2 vs Kharma 3.2Fe/Tenor 75Wp/Sub. Kharma/Tenor prevailed in transparency. That was obvious on two CDs: Cassandra Wilson ‘Rendezvous’, ‘Old devil Moon’ track and Filippa ‘Casta Diva’. Since then I was wondering how I could improve transparency of my system and was thinking about an upgrade to CAT JL2 Signature. Do you know how CAT JL2 Signature performs on transparency scale against Tenor 75Wp (or other OTL amplifiers)?

Other components were identical apart for a venue:
Meridian 508.24,
ARC Ref3,
Stereovox cable.

Thanks