Pikachu (PokéPark) vs Veigar: who would win?

Veigar favored — Favored (~65%)

Pikachu (PokéPark) · Pokémon · End of PokéPark 2

Tier

3-C, up to HIGH 3-A

Attack Potency

Galaxy Level, up to High Universe Level

Speed

Ftl, up to Massively Ftl+

Durability

Large Mountain Level, up to High Universe Level

Veigar · League of Legends · Final Boss Veigar

Tier

3-A

Attack Potency

Universe Level

Speed

Subsonic, up to Massively Hypersonic

Durability

Small Country Level

A heuristic estimate from normalized VS Battles Wiki stats: tier, attack potency, speed and durability.