We should be more worried about the bad direction than bad VFX to be honest!
If you look at first pic, though both scenes have very different context, they are a little similar in that, both the scenes have the actor turning the weapon and then holding onto it at one end with the other end of weapon placed on the ground.
But look at how differently they both are executed. Look at the difference in frames. Why does one look aesthetically pleasing and the other one like a star plus serial?
Firstly, I believe it's due to bad framing. The low angle shot used for Ramayana doesn't look good at all. And then look at the soldiers standing behind. They are looking in the opposite direction lol. Ideally they shouldn't even exist in this frame but the director kept them for some weird reason. This makes the audience feel like whatever happening in this scene is not important at all. And then look at that weird single plant they choose to put over there. It looks so fake. Just sticks out like a sore thumb. Absolutely unnatural and looks out of place. These are all the direction choices which could have been done differently. No amount of VFX can save it.
Then we'll talk about the execution of turning the weapon and compare it with Bahubali. In the above scene, that turning of weapon feels so bland and very TV serial like. While in the below shot, we can literally feel the goosebumps. Its because of bad cinematography and editing. They chose to shoot the whole sequence in just one long wide shot while in Bahubali when he turns the sword, it is a closeup shot which makes it feel more epic. Again here, no amount of VFX can fix it. It's just bad direction.
In the next pic, if you see the that bison, you can easily tell that it's a CGI bison but that scene still looks so epic because it is directed so well. That's the only difference there is.
Nitesh Tiwari maybe a good director with drama but I don't think he's as good of an action director.