Reply to "be going to vs will"

Hi, Freeguy,

Freeguy posted:

A: John is a better player than Martin, isn't he?

B: Oh, yes. _______ the match tomorrow, I expect.


1) He will win

2) He is going to win


Which one is preferable here? (Me: #1 is better than #2.)

Source: Destination, B1

I agree with you. Using 'expect' indicates that it is just a mere prediction.

Freeguy posted:

Here is another one:


A: What do you want to be when you grow up, Stevie?

B: _____ a scientist. That's what I want to do, anyway.


1) I will be

2) I am going to be

Source: Destination, B1 level

(Me: #2 is better than #1 here.)

Here, I also agree with you. Using 'That's what I want to do, anyway' indicates that it is a strong intention.