Dice and Plinko odds are quite close to each other, house edge should be around 1% on mentioned house original games. Slots usually have 3% or 5% house edge, in long term both slot providers and casino makes a decent amount from overall turnover. For quick results and getting low multipliers, you can prefer dice while Plinko game requires a long time and it pays huge with a higher multiplier.
Plinko has rows starting from 8 to 16 mostly, max 1000x multiplier hit can be found on 16 rows. Hitting it has the 1 in 32000 drops average hit ratio if you statistically calculate the overall odds on the single seed. You can get 1000x in first drop or in 100k plus drop depending on your luck.
The topic of house edge is a topic for another day, but again dice have the most likelihood of getting bigger odds compared to Plinko and slot but I don't know the percentage taken for house edge in those games.
The odds will almost be the same between dice and Plinko because those gambling games are based on luck.
Besides that, the chances of losing the money will be almost the same, no matter if you use a different strategy in each game.
But we know that many gamblers have played dice and they use dice as their favorite gambling games.
If that is about the percentage, that will depend on each casino because they will have a different calculation on how much they will take from each game.