Bro I had a visit on both cities recently.... It's true that Arusha is better in terms of quality hotels... But for leisure pub,club,night clubs,casinos,nyamachoma not really... Mwanza city is far better and the prices are affordable... I've also visited their mall,Aim mall...yah it's good somehow but can it stand along with the likes of Rock city and Mlimani city..? It's just like a shopping center...Even local transport you can't compare the two... Take a look at infrastructure, I appreciate that Arusha city has got a dual carriage of Sakina-Tengeru which was built recently but Mwanza city had dual carriage since 2008 and a 6 lane also though it is a short distance... That conference center in Arusha has been there even before 2000 and there was a need to do so... I think mwanza city are planning to build a big one after the ongoing projects;central market, nyegezi bus stand,marine vessels and airport are completed.Arusha and Mwanza were named cities 2012 and 2000 respectively though Arusha was the first to have things like supermarket, movie theater etc... I got my secondary education in Arusha.
And lastly I think this isn't the right platform for battling Tanzanian cities, It is Tanzanian against Kenyan. So we have to put other things aside.