Each of the clones unleashed by Wil possessed the same stats as him, although it can't use his skills save for a couple of them.
With nearly 230 Billion HP, 546 million Defense, and most importantly, 99% damage reduction, the clone is almost invincible against every monster and NPC of level-400 and below present in the game. Only top players with high attack power, critical rate and critical damage can kill it.
In such a position, whether the stats of Princess Tremellia increase by 50% or not, the result will not change.
Then, does she have no chance to defeat the clone or so whatever? Of course not. There's a possibility.
Apart from the non-availability of the majority of his skills, the clones have another disadvantage. It is their attack speed.