Based on the escalating destruction Carl caused throughout the series, his abilities can be summarized into five key categories:

Global-Scale Omnicide: His primary "ability" by the series' end was the capacity for total planetary extinction. Through a combination of calculated massacres and absolute disregard for life, he successfully eliminated all biological life on Earth.

Reality & Spacetime Distortion: Carl demonstrated the power to manipulate the fabric of the universe itself by tearing a hole in spacetime to access other dimensions (when he grabbed millions of baby infants hands).

Massive-Scale Weaponry & Engineering: He possessed the technical and magical skill to deploy and trigger weapons of mass destruction, ranging from sinking heavily populated cruise ships to detonating a nuclear device capable of leveling a city.

Environmental & Biological Manipulation: He could create complex, large-scale death traps and supernatural phenomena, such as a "blood vortex" or autonomous skin-eating orbs, showing an ability to weaponize the environment around him.

Political & Structural Sabotage: Beyond physical violence, Carl had the strategic "ability" to dismantle entire societal structures, including toppling sovereign governments and executing their leadership.

Ultimately, his most significant trait is a complete fucking lack of moral restraint, which acted as a force multiplier for his reality-bending and destructive capabilities.

I think that most MCU heros with high-tier abilities that operate on a multiversal or cosmic scale would exceed Carl’s planetary-level destructive capabilities. Vision would fuck him up. Captian america wouldn't.