Yes, they are capable of that.
Yes, they are capable of that.
It's reasonable to point the finger at them because the sole justification for needing a quad-core processor is that they instructed FC4 to assign thread number 3 as its main thread. No logic behind it, just Ubisoft making a mistake. Even more problematic since it can run on a dual-core system—just require a third-party solution.
It's understandable you're wondering about how companies handle blocking or denying content. The situation with Ubisoft is quite clear—they outright rejected Duel Core users from trying it, which felt unfair and possibly unlawful. Their silence on the matter also raises concerns.
I don't understand what's on the box. However, on Steam the minimum requirement is for a quad-core CPU, which is essentially their software. This gives them the freedom to use it as they see fit. If they wish to restrict certain hardware, they are permitted to do so. In this situation, they did inform the buyer. Even without that, it would likely be considered misleading advertising, and you should consider taking legal action to recover any losses. You might only receive a refund if applicable.
Honestly, I'm not complaining because my system has a quad-core processor and the game ran well. I believe this title isn't suited for dual-core CPUs, especially with high-end GPUs. My friend tried it on a quad-core i5 with a GTX 560, but the graphics card was too demanding. So, you'd need better hardware? I think a solid quad-core CPU would work fine since the minimum specs aren’t an issue here. The performance was decent, even if not top-tier. Thanks.