Both Bitdefender Internet Security and Trend Micro Internet Security are really good software. They both have a perfect score of protection which is the main feature for an internet security suite software.
There are two main difference for these software. The first difference is the price. Depending of the features available in a software, the price is one of the main reason why you choose a software instead of another one. Bitdefender Internet Security is cheaper than the average internet security suite we reviewed while Trend Micro Internet Security is actually more expensive than the average.
The second main difference is the number of features available in each software. Both include important features like the antimalware, antiphishing and antispyware. Usually these features are always included as they are the main reason to buy an internet security suite. The difference is that Bitdefender Internet Security includes more features like a file shredder, a password manager, which is more important than ever nowaday, a virtual keyboard and few more.
The winner is Bitdefender Internet Security.