I completely agree with you because if Zimbabwe did not play at their own venue, if they played at the venue in Bangladesh, the match would have been in favor of Bangladesh. Moreover, no one could show patience on the part of Bangladesh, in the case where a team like Zimbabwe has more than four centuries in two matches, no batsman has seen a century in Bangladesh.
There is hardly any difference between the two. Bangladesh can win only when the matches are being staged at home. And Zimbabwe loses their matches irrespective of whether they are being played on. Both the teams are overdependent on a few players. For Zimbabwe, it is Sikandar Raza, Regis Chakabva and Blessing Muzarabani. For Bangladesh, the dependence is on players such as Litton Das, Shakib al Hasan and Mustafizur Rahman. If these players are not available, then these teams becomes uncompetitive.
I would say that the condition of the Bangladesh team is worse than that of Zimbabwe at the moment. Because Zimbabwe may depend on certain players. But Chakabva, Sikandar Raja and Muzarabarin continued to perform well regularly. But the Bangladesh team at the moment does not have a player who can play well regularly or the team can rely on him. Every player's performance in Bangladesh is erratic.