I would concur with Martin.
The word used there is εὐσυνκρίτοις and seems to possibly be word coined by Epicurus. I've seen it described as referring to men who have to help others and has the meaning of “well constituted, well composed.” (remite a los hombres que han de ayudar a otros y tiene el significado de "bien
constituido, bien compuesto"). And well-compounded, well-constituted, or discriminating, Diog.Oen.1,2.
Henry George Liddell, Robert Scott, A Greek-English Lexicon, ε , εὔσπολον: , εὐσύγ-κρι^τος
The word also occurs in fragment 3 in the inscription, too:
And so, having described the second reason for the inscription, I now go on to mention my mission and to explain its character and nature.
Having already reached the sunset of my life (being almost on the verge of departure from the world on account of old age), I wanted, before being overtaken by death, to compose a [fine] anthem [to celebrate the] fullness [of pleasure] and so to help now those who are well-constituted. Now, if only one person or two or three or four or five or six or any larger number you choose, sir, provided that it is not very large, were in a bad predicament, I should address them individually and do all in my power to give them the best advice. But, as I have said before, the majority of people suffer from a common disease, as in a plague, with their false notions about things, and their number is increasing