Dimaria (without Age Seal) is quite a bit weaker than Ajeel with regards to attack power, speed, etc. Dimaria's age scratch and beam attacks didn't even incapacitate Wendy, so her attacks would be ineffective against Erza. Dimaria does seem to have reasonable durability to tank DF Wendy's attacks, but Erza has Nakagami, Benizakura, etc. Erza should win mid to high diff.
Well, to be fair, it's not like Dimaria's attacks didn't affect Wendy. Sure, it didn't incapacitate her, but how many times has that happened in the series even when we see strong mages vs. weak mages? Either way, her attacks still did a lot of damage to Wendy to the point she would have died if there were no interference involved. I see Dimaria's
Age Scratch as a starting attack and not a finisher because Dimaria said it would inflict immense pain. She was technically toying around in her
God Soul form. This was also similar to when Kyōka tortured Erza with pain. It wasn't supposed to kill her but rather make her weak. Also, note that this was just the beginning of the fight...
Not to mention, Dimaria even made DF Wendy immobile which is impressive in itself. If the battle were to continue, Dimaria's following attacks would probably kill her. It just so happens that Chelia was able to defend her. By the way, this is the same Wendy that was able to defeat a Nine Demon Gate like Ezel by herself one year ago. She probably has grown a lot stronger; however, that does
not mean she should be classified as a High Tier Wizard yet.
I'd say DiMaria has better durability than Erza - though Erza usually clads herself in armour so that would bridge the gap I'd say. That said Erza's big moves can definitely work on DiMaria, well it did v Ajeel.
DiMaria's attacks fall short though. That laser is blockable by someone at Sherria's level, and that full powered attack... that is almost blockable by Wendy(base) enchantments. Erza has many moves that trump this. Compared to a spriggan DiMaria's full powered attack is much less than God Serena's DS spells, and might be weaker than a punch from Wahl. DiMaria's greatest power by miles is Age Seal, that's what makes her Spriggan level (apart from MP).
TO-Sherria is lesser than Erza to me. Nothing really indicates she's better, and Erza has more feats to draw from. Sherria was probably around the same age as Erza too by the looks, it's just that Erza is more talented. And her endurance/mental toughness usually trump anyone.
I don't deny that Erza attack would work on Dimaria but would it kill her? Probably not. Plus, Dimaria also wears armor, whether that makes a difference or not is up to the viewer.
I kinda knew you would bring the point up that Chelia blocked Dimaria's attack but it was Third Origin Chelia. I guess we just have to disagree here because we obviously don't see the events of the fight in the same manner. As for Wendy, I think we interpreted Dimaria's words differently. First of all, Wendy is a support mage so enchantments and defense should be her specialty even though she would have lost nevertheless. Second, Dimaria was already losing her
God Soul from the previous panel. Basically, she was going downhill at that point and I understood her "full-powered attack" as the extent of her power in desperation while being in a weakened state at the same time. I would agree that these feats are definitely lower than God Serena. As for Wahl, she wouldn't be close to Wahl's Etherion or anything of that sort... But definitely stronger than any of Whal's punches.
Yeah, I did not mean Chelia was Erza's age or anything. I was just saying her power level has increased significantly to the point it would be comparable to the power she
could wield in the future.