How Strong A Player Was Giovanni Tonetti?

Following up on the discussions (see "Jerome Gambit: How We Got Here" and "Jerome Gambit: Giovanni Tonetti") of the 19th - 20th century Italian chess player Giovanni Tonetti (for the link between Alonzo Wheeler Jerome and Tonetti see "Jerome Gambit: Startling Discovery") I visited the EDO Historical Chess Ratings site, by Rod Edwards. 

(Alas, Jeff Sonas' Chessmetrics site does not include data on Tonetti.)

Edwards has constructed a system (similar to Elo or Glicko) to help evaluate the strength of historical chess players.

For Tonetti, he focuses on the First Italian National Tournament in Rome, from April 26, 1875 to May 26, 1875.

He gives

Results

Crosstable scores

Name   Edo    Dev.   Score  /  Games    Seni, Pietro    2404 (93) 13 / 16  Maluta, Giovanni    2414 (89) 12.5 / 16  Tonetti, Giovanni    2405 (102) 12.5 / 16  d'Aumiller, Alessandro    2218 (82) 8 / 16  Marchetti, Carlo    2172 (96) 7 / 16  Sprega, Luigi    2191 (83) 6 / 16  Tormene, L.    2060 (99) 4.5 / 16  Cassoli, Ferdinando    2060 (99) 4.5 / 16  Cantoni, Filippo    2084 (89) 4 / 16

Based on that tournament, a snapshot of Tonetti's play, it looks like his skill was at the master level. Impressive.

(The EDO Historical Ratings Site does not list Alonzo WheelerJerome. I checked.)