Yes but you need to look at the starts in context...Hartley is probably mostly prem cup games etc...whereas Kelly and Atkinson have played a few seasons of prem now etc.
Fair point, there's always more nuance to be seen.
OHartley is 10 PRC and 9 Prem (4 starts)
Anyanwu is 6 PRC and 12 Prem (7 starts)
Atkinson is 6 PRC and 19 Prem (16 starts) and 5 EPRC (4 starts)
Ojomoh is 7 PRC and 38 Prem (31 starts) and 5 EPRC (4 starts)
Dan Kelly is 3 PRC and 45 Prem (41 starts) and 15 EPRC (10 starts) and 1 test match (1 start)
I still can't see Anyanwu as being ahead of Hartley.
I see 2 at the front (Kelly & Ojomoh), 1 in the middle (Atkinson), and 2 at the back (Hartley & Anyanwu).
Selecting for England, I'd have Atkinson ahead of Ojomoh on the principal that he's first choice starter at club level (through comparative lack of competition at his club) - but I'd very much keep Ojomoh involved, because IF he can become a first choice starter, or even equal choice starter through rotation with his international competition; then he'll have proven himself to be a VERY good player indeed. I don't think he's there yet, but he's got all the tools, he just needs to cut down on his error count. I kinda like that he's had those little bits of experience at 10, 13 and 14 as well to round off his education.
Playing multiple seasons is the whole point about Second Season Syndrome.
Most players get a gentle introduction, generally <10 matches, and generally more PRC/AWC than Prem/EPRC; then a breakthrough season, where they hit 20+ appearances, then they get into their Second Season - where we get to find out if it was injuries to others, pure class, or a purple patch unlikely to be repeated; whilst opponents now have some actual analysis of their play, and come up with tactics to mitigate the player's strengths, and exploit their weaknesses - AKA Second Season Syndrome.
Hartley and Anyanwu haven't had their breakthrough season yet, Atkinson had his last year.
So many players, especially backs, burst onto the scene with a massive fanfair, then basically disappear, or find their level at solid-club-pro, never to achieve those heights again.
It's why I would (basically) never pick a player for international rugby based on their breakthrough season alone. Get to February of their Second (principal) season, and you've (just about) got enough to know how they're handling the pressure of regular starts against opponents who've analysed them.