I cycle through 8 different RTTS players. I can honestly say this doesn't line up with what I'm experiencing with any of them, although I'm definitely seeing some different shenanigans that make me think the simulation is way off, but ONLY when I'm actually involved (as a baserunner, for example).
Here's a quick rundown of the players, their teams, and performance. C for Orioles (Orioles still suck, they're performing about how you'd expect). Control Freak SP for Tigers (Tigers are horrible, but I still win quite a few games when I start). 1B for Royals (They're about middle of the road, struggling to stay just barely above 500). Flamethrower SP for Cubs (They continue to battle for 1st in a very competitive division, I win most starts). Plain Filthy SP for Rays (previous year with White Sox, they suck, but I still won several games, they stayed above only the Tigers in the division). SS for Blue Jays (they perform exactly as you'd expect, staying above the Orioles, behind the Yankees & Red Sox and battling the Rays). Flamethrower CP for Phillies (actually more competitive than in real life until a horrible trade decision). CF with Rockies just started rookie season, so can't really comment in him. As you can see, everybody performs how you'd expect them to perform in my own experience.
So what shenanigans am I seeing then? For all of my hitters, the players hitting behind them do not perform well at all when I'm on base. I see some really crazy things. For example, I've been on different teams with different players who always lead the league in hitting into double plays. It's almost laughable at this point. I get on base with less than 2 outs, and shrug...here comes the next hitter hitting about to GIDP. This is also demonstrated by the low batting averages and high strikeout rates for players that hit while I'm on base, no matter who they are. I've seen it with Mookie Betts, Josh Donaldson, Salvador Perez, Whit Merrifield, Adalberto Mondesi, Pete Alonso, Jorge Soler.
Perhaps the BEST measure though is looking at some real life hitters, look at how often they get driven in after getting a base hit, but eliminating HR's from the equation. Let's compare Whit Merrifield's real numbers to my Blue Jays SS numbers, as they're similar low power hitters, with similar hit stats. Whit Merrifield had 206 hits and 16 HR's in real life, while my SS had 212 hits and 17 HR's. It's the Runs that are a problem...Whit had 105, while my SS had 72. After eliminating HR's from both the Hits & Runs stats, Whit was driven in by his teammates 46.8% of the time, while my SS was driven in 28.2% of the time. This is also despite my SS having more Doubles (53 vs 41) and Triples (11 vs 10), so it's not a matter of him getting in better scoring position. My SS also has Mookie Betts and Josh Donaldson hitting behind him and is in the leadoff spot. It's also not an isolated result either. My Royals 1B was driven in by his teammates only 21% of the time he's reached base. My Orioles Catcher was only driven in by teammates 18.7% of the time he reached base...in fact, he only had 20 runs ALL YEAR that were not a result of him hitting a HR. On the other side, Whit Merrifield is also not an isolated incident. Tim Anderson was driven in 42.3% of the time, Rafael Devers a whopping 57.4% of the time, DJ LeMahieu 48.5%, Marcus Semien a whopping 62.8% of the time, and finally, Jorge Polanco 51.8% of the time.
So, those are the "facts"...not just a "feeling". Players that hit behind you in-game do not perform as well as they should in real life. This results in you reaching base, only to be driven in by your teammates about half as often as would be considered realistic. Imagine how much more fun the game would be if you were driven in twice as often as you are now. How many more games would your team win over the course of a season?