[NoOne]

it is a specific equation based on ratings -- when it's milled down to a 11-point resolution ("0"+5*2) it will wildly vary for all sorts of reasons. even if you assume no AI evaluation using stats.. which leads to the second potential reason it wil vary wildly at first with any player that doesn't have any stats accrued - ai eval will cause it's own wildness when the first 3 years are played out of a career (or a seed player of a fictional league etc etc).

scouting inaccuracy or even a gain or loss of "1/200" point change of 1 ratings under-the-hood, if they are on the cusp of the next step up.

stats and AI can also influenceit if oyu have it activated... so i'd expect more volatility in the first years of a fictional league than a real-players 2018 league. (i guess a historical league starting in 1871? would be the same, otherwise you do have existing stats history for any players that is in the mlb when you start the league)

e..g Starting a league in 1960 -> anyone but a rookie that year has at least 1 year of stats to aid the ai stats evaluation.

the best solution to reduce the wild swings- use 20-80 scale. thats 61-pt. resolution. ~5x the 5 star choice. ("zero" and 1/2 stars included and "20" are included in the 20-80 scale, so an 11pt and 61pt scales)

fyi a 20-80 scale going by "5" is essentially hte exact same thing as the 5-star system... 2 points more for a total of 13, again including 20 or "0" is necessary for this math.