Suigetsu is a little baby who whines about everything
Tobirama has no way of defeating anyone who is actually strong. Didn't that dragon water jutsu take like 44 handseals? and it sucked. So yeah that's not impressive either.
If that was tobirama at half power, then full power tobirama is only 2x as strong as he was when he fought hiruzen, which isn't very strong.
Only tobirama actually tried to escape oro's control, we don't know if minato or hiruzen could.
We know he died to a weak force of ninja hit men.
1. Is using his jutsu to fight no longer an option for defeating strong opponents?! As that's what he'd do to defeat them. He used the jutsu that takes others 44 seals in one seal, and from what I recall it took a Hokage using defensive Jutsu to deflect it....on top of that it came with no body of water being present and at a fraction of his
2. It wasn't half power, but a FRACTION of it. Now yes 1/2 is a fraction, but Tobirama would have said half. The fact he didn't indicates and implies it's much smaller than one half. If you need further proof compare the Hashiramas...does it appear that only half of Hashirama was used in that battle. power.
3. Tobirama did not attempt to escape, he merely had the power to ignore the orders. It took Senju DNA of Hashirama to just stop him from moving. Tobirama didn't even use the hand seals to break the contract....he just did what Hashirama has done. He could have done what Madara did and just used the hand seals to break the contract. Considering he invented it...he ought to know how it operates.
4. As I explained he died being a target that was trying to gain the attention of (not kill) the Kinkaku Force. On top of 20 or so elite S-Rank criminals/bounty hunters....probably including Kakuzu with Kinkaku and Ginkaku. He had to contain them while drawing them away....a tough way to go without dying honestly.