Why do Russian tanks dread challenger 2 so much?

The Challenger 2 is a main battle tank designed and manufactured by BAE Systems Land & Armaments (originally by Vickers Defence Systems).
Interesting Engineering

The Challenger 2, a formidable main battle tank designed and manufactured by BAE Systems Land & Armaments (formerly Vickers Defence Systems), stands as a paragon of military engineering. With a powerful Perkins CV12-6A V12 diesel engine under its hood, it combines speed, endurance, and protective features to become an unparalleled force on the battlefield. Its combat prowess, armed with the unique L30A1 rifled gun and a state-of-the-art Digital Integrated Control System, has been proven in conflicts like Iraq, Kosovo, and Bosnia, where it has emerged victorious every time. As it prepares to face its ultimate test in the grueling Ukraine-Russia conflict, let us delve deeper into the impressive features that make the Challenger 2 an unstoppable force. The Challenger 2 boasts impressive mobility, capable of reaching speeds of 37 mph (59 km/h) on roadways and 25 mph (40 km/h) on off-road terrains. Its excellent power-to-weight ratio ensures agility and responsiveness in various battlefield conditions. On road surfaces, it can traverse up to an impressive 342 miles (550 km), while off-road, it can cover approximately 156 miles (250 km) without refueling. This outstanding range allows it to maintain its presence in critical areas without the need for frequent refueling and logistical support. One of the defining features of the Challenger 2 is its exceptional protection, thanks to the second-generation Chobham armor, known as Dorchester. This advanced armor system offers unparalleled resistance against a wide array of threats, including kinetic projectiles and shaped charges. Its ability to withstand hostile attacks has earned the Challenger 2 the reputation of being virtually indestructible on the battlefield, instilling confidence in its crews and striking fear in the hearts of its adversaries. The Challenger 2's armament is as lethal as its defensive capabilities. The L30A1 gun, unique among NATO main battle tank weapons, stands out for its rifled barrel. Combined with its predecessor, the Royal Ordnance L11A5, these third-generation main battle tank guns offer unparalleled accuracy and firepower. The rifled barrel allows for precise targeting, making it highly effective against both stationary and moving targets. With its ammunition options and advanced fire control systems, the Challenger 2 can engage enemy forces with deadly precision. A key factor behind the Challenger 2's operational prowess is its cutting-edge Digital Integrated Control System (DICS). This advanced fire control system enables the tank's crew to engage in dynamic combat situations while on the move. The DICS integrates a host of sensors, cameras, and targeting systems, providing real-time data to the crew. This seamless integration of information allows the crew to accurately target and neutralize adversaries, even while the tank is in motion, giving the Challenger 2 a significant advantage on the modern battlefield.

The Challenger 2 represents the pinnacle of tank engineering, combining speed, endurance, impenetrable armor, lethal armament, and a sophisticated fire control system. Its unbeaten battlefield record speaks volumes about its capabilities and the dedication of its crews. As it faces its ultimate test in the Ukraine-Russia conflict, the world watches in anticipation, confident that the Challenger 2 will continue to be an unyielding force on the battlefield, safeguarding its crews and striking fear into its adversaries.