Demba Ba to Arsenal?

Following Arsenal's 2-1 win over Newcastle, rumors hit the news of Arsenal attempting to try and buy Demba Ba, despite also being very close to signing Podolski. Ba was not playing as good as usual today, and considering Podolski is said to be moving to Arsenal, this seems like it is a bit useless. What do you guys think? Would Ba be a good signing for Arsenal? Would he be better then Podolski?