Bruce was happy to have both on the pitch for their 1-1 draw with Brighton.
He said, "On 'Big Joe', the burden of being a Newcastle United centre-forward is always going to be there and I think for any player who comes to the Premier League they need a bit of time, especially if you are young.
"No disrespect to the Bundesliga or wherever they have come from, it is totally different to playing against three big centre-backs from Brighton who bashed him to bits.
"It wasn't until Andy Carroll came on where we could give him a bit of a hand but it was a bit of an eye-opener for him.
"He learned from it, he is desperate to do well, so give them a bit of time and I think they will both flourish."