The class series, when at its highest stage of Beast Lord and compared to the other series at their highest respective stages, has high HP, good Attack, and stronger Defense, but very low Agility (tying with the Angel and being higher only than the Hero) and the lowest PP rating of all classes. The series has a low Luck rating, tying with the Master and being higher only than the Chaos Lord. Noteworthy Psynergy from an endgame perspective includes Phoenix (equivalent to Revive), Manticore (exactly in between Cool Aura and Pure Wish), Ghost Soldier, Whiplash, Impact/High Impact, and Cure Poison, and the heaviest area-of-effect Psynergy it has is technically Fire Dragon. Average stats from an endgame perspective are 132% (144% if you don't factor in Luck).
The Tamer Class series is unique in that nearly all the Psynergy will change upon a change in class within this series. Thus, it is more convenient to think of the Psynergy in sets rather than series. However, all four classes in this series learn the Impact Psynergy series, Cure Poison, Restore, and Whiplash.
With all steps of the series, ranged Psynergy will do noticeably less damage to secondary targets than comparable Psynergy of most other classes.
Statistically, the Tamer leaves a bit to be desired: Sub-par agility with the dubious misfortune of having an un-diverse PP pool and low Luck is not a good sign. However, the Beast Lord has a pretty good Attack stat, and also fortuitous is the fact that the mainline damage Psynergy abilities (namely, the beast summons) draw from the attack stat, so the PP pool might go a little farther than it would otherwise. The class itself is also noteworthy that most of the attack Psynergy are single target, making the Tamer better for boss fights. In addition, the low agility can allow a Tamer to be used like a Paladin (heal during the end of the turn).
However, like all Item Dependent classes, specializing an Adept into the Tamer Class will leave an awkward number of Djinn floating around. Using the duplication glitch at Trial Road to create multiple copies of the class-changing items or making use of the extra Djinn to create tri-elemental classes like the Jupiter Adept version of Ninja can alleviate this issue to a degree.