no, you need to implement iPropertyAccess interface (GetProperty method) for both objects (credits and Advertiser) and create an overload of TokenReplace, overriding instatiation and setpropertysource. See Announcements module source code for example.

I changed the the replacedTokenValue function so that is just replaces for example the [CreditInfo:ITEM] and leaves the other ones... If there is a better solution please let me know

  public class TokenReplaceCredits : TokenReplace
    {
        public TokenReplaceCredits(CreditInfo credit)
            : base(DotNetNuke.Services.Tokens.Scope.DefaultSettings)
        {
            this.UseObjectLessExpression = true;
            //this.PropertySource[ObjectLessToken] = credit;
            this.PropertySource["creditinfo"] = credit;
        }

        protected override string replacedTokenValue(string strObjectName, string strPropertyName, string strformat)
        {
            //return base.replacedTokenValue(strObjectName, strPropertyName, strformat);

            if (strObjectName.ToLower().Equals("creditinfo"))
            {
                return base.replacedTokenValue(strObjectName, strPropertyName, strformat);
            }
            else
            {
                return string.format("[{0}:{1}]", strObjectName, strPropertyName);
            }

            /*string result = string.Empty;
            if (strformat == string.Empty) strformat = "g";
            if (strObjectName.ToLower() == "datetime")
            {
                if (strPropertyName.ToLower() == "today")
                {
                    result = System.DateTime.Today.ToString(strformat);
                }
                else
                {
                    result = System.DateTime.Now.ToString(strformat);
                }
            }
            return result;*/
        }