Was Crocodile stronger at Marineford? Or was he holding back in Alabasta?

 During the Alabasta arc, Crocodile displayed a level of power that was initially considered overwhelming by the Straw Hat Pirates. He possessed the Logia-type Devil Fruit called the Suna Suna no Mi (Sand-Sand Fruit), which granted him the ability to control and transform into sand. He had a reputation as a Shichibukai and controlled the desert kingdom of Alabasta from the shadows. His strength was showcased through his battles with Luffy and others. At Marineford, Crocodile was present as part of the war that took place at Marine Headquarters. While he did participate in the battle, he didn't display the same level of dominance as some other powerful characters present. This has led fans to speculate that he might not have been as strong as initially portrayed in Alabasta. It's important to note that power scaling and character abilities can be subject to interpretation and development by the author. Oda often keeps details deliberately open-ended to keep the story intriguing.

Is stalinism still relevant today, or has it been surpassed by newer ideologies?

 Stalinism, as a political ideology and system of government, was associated with the Soviet Union and its leader Joseph Stalin, who ruled from 1922 to 1953. Stalinism was characterized by a single-party communist government, state-controlled media and economy, and the suppression of dissent and opposition.

Today, Stalinism is no longer a dominant or widely-practiced ideology. The Soviet Union and the socialist states of Eastern Europe, which were governed by Stalinist regimes, have all undergone political and economic transformations since the collapse of the Soviet Union in 1991. Many of these countries have embraced democratic systems of government and market-based economies.

However, Stalinism continues to be studied and debated by historians, political scientists, and others as a significant and influential period in world history. It is also sometimes invoked as a term of criticism or ridicule to describe authoritarian or repressive governments or regimes that are perceived as reminiscent of the Soviet Union under Stalin.