"So, which is it?"
It depends on their audience.
If they're talking to a non-JW that is part of a more populous religion and the non-JW is inclined to reject JWs because they are such a small religion, then they go with "narrow and cramped is the road to life, and few are the ones finding it".
But if they're talking to a JW with doubts about the JW religion being the truth or having Jehovah's approval then they resort to boasting about the "increases in numbers coming into the truth" as proof of Jehovah's blessing of the society!
There are many such contradictions built within the religion. Other examples include:
God accurately preserved the NT, vs God allowed "apostate christians" to remove his name from the NT - without leaving a single manuscript to testify to the fact that the name was originally in the NT. (i.e. God did not accurately preserve the NT)
They tell the public to compare JW teachings with what their bible says to see that JWs have the truth (non-JWs would have to be able to accurately interpret scripture in order to make such judgments), vs only Jehovah's organization can accurately interpret scripture. The bible cannot be accurately understood apart from Jehovah's organization. (non-JWs cannot accurately interpret scripture)
When Jesus said at John 14 that he was going to prepare a place for them in heaven, he was talking only about the 144,000 since he was talking at the time to his soon to be anointed disciples. Vs when he spoke to the same group in the same chapter about the need to pray in his name - he was speaking to everyone and not not just the anointed. lol.
Jesus is mediator only for the 144,000 and only anointed ones should partake of the emblems at the memorial. Vs Everyone should use Jesus as mediator in prayer, praying in his name. lol. The same reasoning used by Watchtower to claim that only the anointed are part of the new covenant and only they should partake of the emblems - that same reasoning can be used to teach that only the anointed should pray in Jesus' name.