Active Noise Cancellation on samsung is pretty bad. So I am not too sure about Galaxy Buds 2 Pro, but so far I have used 2 of samsung's "noise cancelling headphones" which are the Galaxy Buds Live and the Galaxy Buds 2. So by extrapolation I am gonna say that the Galaxy Buds 2 Pro's noise cancelling is probably on the same level as the Buds Live and the Buds 2.

On the other hand, once I switched to AirPods Pro 2 there was a drastic difference to the effectiveness of the noise cancelling between Apple and Samsung

To put the difference into perspective, when Im at home I usually use noise cancelling headphones in my room in order to drown out the noise coming from my air conditioner, which is on the middle of the spectrum of noisiness, maybe as loud as those you find in a mall or when you turn the fan of your cars aircon to maximum speed.

When using Samsung's headphones, yes, the noise cancelling does work, but its very minimal with around 40% to 50% of the sound from the aircon coming to my ears.

However, with Apple's AirPods Pro 2, the sound of my fan at home is completely masked out and its almost as if my fan is not on at all.

Hence, if you feel like active noise cancellation is an important factor for you, AirPods Pro or AirPods Pro 2 is definitely the better option for you.

P.S This post was written with some recency bias but I hope this helps.