And Brown was clear that were positives to take from the day as well as things to work on.
"There was a good bit of endeavour out there. That's what we aimed to do. As a squad we wanted a high energy performance.
"We didn't quite get the end result and leaked too many tries really. You can't leak five tries at any level.
"But the whole squad really put a lot of effort into it and that's what the whole weekend was all about.
"Leinster are very, very good in the contact area and they did a job on us there really which was a good lesson for us in a preseason game. It's good to iron out these things in preseason."
Next up are the Cardiff Blues who come to Kingsholm on Saturday as Nigel Davies send out a Gloucester XV for the first time at home.
The game is a testimonial game for Brown and team mate Nick Wood and it will be a moment to remember according to the big second row.
"It's a real honour to be at the squad for so long and one of those moments that I know I'll look back on and be proud of.
"For both of us to be at the same club for so long is great. We're the latest in a line of players who have done it at Gloucester, which is testament to the club and explains why we all want to stay here. It's such a great club.
"The supporters are fantastic and that was demonstrated in the JP Morgan 7s when we had 8,500 in the ground for a Sevens tournament which was amazing and I think the players from other clubs were a bit taken aback.
"That was a great occasion and, if we can replicate that at the weekend, then Woody and myself would be more than happy."
For all that, however, the Bristol born lock stressed that, first and foremost, the Gloucester performance on the day is the most important thing.
"But, to be honest, it's all about the rugby for myself and Woody. It'll be a great event but the rugby is what we're here for and part of the build up to Northampton.
"We've had a really, really good preseason. Everything's been very positive. Change has been good for us and there's a lot of energy about the place.
"Nigel has been a real leader in that respect and he's driving that change and we're all buzzing off each other at the moment. We just want to get back to Kingsholm now and get a good result."