问SQLAlchemy类会比普通类慢吗？

EN

from sqlalchemy import String, Column
from sqlalchemy.ext.declarative import declarative_base

Base = declarative_base()
class Class1(Base):
    __tablename__ = 'table'

    data = Column(String)
    #and some other data members
    @staticmethod
    def parse(json_):
        #parse the json and return a list of Class1 instances

class Class2():
    __init__(self, data):
        self.data = data
        #and some other data members
    @staticmethod
    def parse(json_):
        #parse the json and return a list of Class2 instances